itchy rash on my buttocks and thighs

[tyler1234]

This started about 2 weeks ago i think, I have a VERY itchy rash on both sides of my butt crack. the rash is mostly small some bigger pink and red bumps some look like pimples some don't. it spread down to my thighs a little, and is very very itchy, its not necessarily painful just itchy. at fist my gf and i thought it was jock itch but the was it looks i am not 100% sure thats what it is. i got 1 bump on the bottom side of my penis a day or two ago but i put my jock itch cream on there and it seems to be going away now also my scrotum got very dry and scaly like.We are very confused on what this might be, we do not have insurance so its hard to get to the doctor. i have also had little bump outbreaks on my legs, arms and tummy if anyone knows what this might be please help and the pumps feel deep they are not surface blisters  

[tyler1234]

and my girlfriend does not have any of these symptoms. no itchy bumps no anything

[tyler1234]

also it seems to be on my chest a little bit now?